Sina claims to be the web's most popular Chinese language portal, with about 280 million registered users and almost a billion page views per day.

The portal and news site said its contract with Google had come to an end.

A Google spokesbod declined to comment on specifics but told the Wall Street Journal: "While we can't comment on specific partnerships, we announced last year that over time we would not be syndicating censored search to partners in China after fulfilling our contractual commitments." ®